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分析了四机并联全辐射冷却推力室的热特点．忽略径向导热，考虑推力室外向的相互及自身辐射交换、内壁经喷口的辐射泄漏以及周向和轴向的传导热量，建立了推力室壁的能量方程．计算表明，推力室之间的辐射传热引起的周向温度畸变，主要取决于推力室间的相对间距Ｌ／Ｄ，而与原壁温水平无关．对仅有两对角推力室工作、另一对推力室不工作时的温度分布特点也作了分析．经地面模拟和实验验证，数值分析结果是正确的．
The thermal characteristics of a four-machine parallel full radiant cooling thrust chamber are analyzed. Neglecting the radial thermal conductivity, the energy equation of the thrust chamber wall is established considering the reciprocal and self-radiation exchange of the thrust chamber, the radiation leakage of the inner wall through the nozzle, and the heat conduction in the circumferential and axial directions. The calculation shows that the circumferential temperature distortion caused by the radiative heat transfer between the thrust chambers mainly depends on the relative spacing L / D between the thrust chambers, but has no relation with the original wall temperature. The analysis of the temperature distribution in the case of only two diagonal thrust chambers and the other pair of thrust chambers not in operation is also analyzed. After ground simulation and experimental verification, numerical analysis results are correct.